Steam liquid-heater



(No Model.) 2 Sheets-Sheet 1.

J. F. BRADFORD. STEAM LIQUID HEATER.

Patented Jan. '7, 1890.

N. PETERS Pholo'Lithogmpber. wnhinnun. D. C;

(No Model.) I 2 Sheets-Sheet 2. J. P. BRADFORD.

STEAM LIQUID HEATER.

No. 418,939. Patented Jan. 7,1890.

r r *u u MUTNESSES:

ATTORNEY N. PETERS. Phnko-Lilhagnphlr. Wuhingtm ma UNITED STATES PATENTOFFICE.

JOHN F. BRADFORD, OF LEETONIA, PENNSYLVANIA.

STEAM LIQUID-HEATER.

SPECIFICATION forming part of Letters Patent No. 418,939, dated January7, 1890.

Application filed June 3, 1839- Serial No. 313,023. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN F. BRADFORD, of Leetonia, in the county ofTioga and State of Pennsylvania, have invented a new and usefulImprovement in Steam Liquid-Heaters, of which the following is aspecification.

My invention is an improvement in steam liquid-heaters intendedespecially for use in heating tanning-liquor; and the invention has foran object, among others, to provide means whereby the degree to whichthe liquor is heated may be automatically regulated.

The invention consists in certain novel constructions and combinationsof parts, as will be described and claimed.

In the drawings, Figure l is a sectional view of my preferredconstruction. Fig. 2 is a cross-sectional View on about line 2 2 ofFig. 1. Figs. 3 and 4 represent a somewhat different construction withinsome of the princinear the top of same. This tank 0, it will be noticed,is arranged above the high-water mark of the boiler A, the purpose ofwhich arrangement is to permit the water of condensation in theheating-tank to flow back into the boiler through the water-pipe D,which, as shown, may lead directly to the boiler or may lead into thewater-supply pipe of the boiler, as may be desired. This arrangementpermits all the water of condensation to flow back, so that when desiredthe tank may be kept free of such water. The liquor-pipes E lead intoand out of the heating-tank and are suitably disposed or coiled therein,so that the temperature of the liquor circulated through the same willbe raised by the heat within the tank.

I have discovered that by subjectingall the coils of the liquor-pipe tothe action of the live steam entering the tank through the pipe B theliquor passed through the pipes E may be raised to the highest point,while by permitting the water of condensation to cover said coils to agreater or less extent the temperature may be regulated, the degree ofheat lowering as the quantity of water is increased in the tank andrising as the quantity of water is decreased. Therefore by providing forthe discharge of such water at difierent heights in the tank I am ableto regulate its accumulation and so control the temperature of theliquor. In effecting this end I provide, together with thetank and thewaterpipe, a connection oroutlet pipe constructed as will be described,whereby the water of condensation may be taken from the heatingtank atdifferent heights. In carrying out this feature of my invention I preferthe construction as shown in Figs. 1 and 2, and which I will nowdescribe. In such construction the outlet-pipe F connects at one endwith the water-pipe D and has its inlet end or opening at f adjustablevertically, so that it may be set to different heights in the tank toreceive the water of condensation and conduct it out of such tank. Theconnection of pipe F is preferably effected by the construction shown,in which the said pipe is provided or connects at its lower end with aplug G, turning in a casing H, secured to the tank, such plug havingopenings or parts registering with the base of pipe F and with the pipeD, which connects with the plug-casing H, as shown in Fig. 1. I providethe plug G with a stem g, to which a handle or lever I may be applied toturn the plug, and so adjust the pipe F to set its inlet end up or down,as desired. It will be seen that the higher the said inlet end is placedthe more water of condensation will accumulate in the tank and the lowerwill be the temperature to which the liquor in the liquor-pipes will beraised, and that as the pipe is lowered it will draw off the water ofcondensation and leave the pipes exposed down to the said inlet-opening.An index may be provided at i and suitably graduated to indicate thetemperature to which the liqoutletdevice, which is constructed to enablethe water of condensation to be drawn off at diiferent heights. Now, sofar as I know it is now in connection with tanks, liquor-pipes therein,and a steam-pipe leading into the 4, and 5, which to a certain extentare equivalents of that shown in Figs. 1 and 2 and be-- fore described.

In the construction shown in Figs. 2-3 and 4 the outlet device orconnection consists of an inner cylinder J, having a series ofspirallyarranged parts 3' formed through it and connected at its lowerend with the water-pipe D, and the outer cylinder K, having a series ofports 11; formed parallel with its axis, the openings j and being in thesame diametrical or transverse planes, and the cylinder K beingconstructed to turn on cylinder J. Now

it will be seen that as the cylinder K is properly turned its opening itwill be brought successively into register with the different openingsj, so that the lower or upper openings j or any intermediate one ofsuch openings: may be registered, so as to draw off the water; ofcondensation at difierent heights in the At its upper end thecylindrical sectank. tion K has a stem L, to which the handle I isconnected, and an index 2' may be provided, as described, in connectionwith the construction shown in Fig. 1.

In the construction shown in Fig. 5 a drum or chamber M is providedalongside the tank and has pipes N connecting it at different heightswith the tank, such pipes N being independently valved at n, and thepipe 1) being connected with' such drum or chamber. By the saidconstruction it will be seen that the water of condensation may be drawnfrom the tank at different heights. In this construction the drum orchamber hi and the independently-valved pipes N constitute the outletdevice.

It will be seen from the foregoing that the constructions shown in Figs.3, 4, and 5 are to certain extents equivalents of that shown in Figs. 1and 2, as before stated.

Obviously it would be within the broadest features of my invention tosimply provide a tank or receiver, a pipe circulated through said tankfor the liquor to be heated, a pipe for conveying the steam from theboiler to the tank or receiver, a pipe for conveying the water ofcondensation from the tank or receiver back to the boiler, suchlast-named pipe having a valve by which to control the be kept at thedesired height in the tank or receiver, as will be understood from Fig.6 of the drawings; but the construction of wateroutlet devices, as shownin Figs. 1 to 5, inclusive, and before described, may be preferredbecause it operates automatically to preserve the water at the proper ordesired height in the tank or receiver.

"While the single construction of liquorpipes, as shown in Fig. 1, maygive good results, it may be preferred to use the double construction ofcoils shown in Fig. 7. In this construction two coils are showna lowerand an upper one-and liquor to be heated maybe directed through thelower coil or through the upper coil, the lower coil being submerged andthe upper coil being exposed to the direct action of the steam, as willbe understood. By this construction it will be seen that two differentdegrees of heat may be secured from the same tank.

Having thus described my invention, what I claim as new is 1. Theherein-described improvement in liquid-heaters, consisting of the tankor receiver, the pipe for conveying steam to said tank or receiver, twoindependent liquorpipes arranged one above the other within the tank orreceiver, and means whereby the water may be discharged at a pointbetween the upper and lower coils, substantially as set forth.

2. In an apparatus substantially as described, the boiler, theheating-tank, and the liquor-pipes therein, combined with the steampipeleading to such tank, and an outlet device, substantially'as described,whereby the water of condensation may be taken from the heating-tank atdiiferent heights, substantially as set forth.

3. In an apparatus substantially as described, the combination, with theclosed heating-tank having the liquor-pipes therein and the steam-pipeleading thereto, of the outlet-pipe having its inlet end or openingadjustable upand down within the heatingtank or the equivalent of suchoutlet-pipe, substantially as set forth, whereby the water ofcondensation maybe taken from the heating-tank at difierent heights,substantially as and for the purposes specified.

4. In an apparatus substantially as described, the combination, with thetank having the steam-pipe leading therein and the liquor-pipes in saidtank, of the outlet-pipe movably supported at one end at or near thebottom of the tank and movable at its other end up and down in the tank,substantially as and for the purposes set forth.

5. In a steam liquid-heater, the combination of the tank or receiver, asteam-pipe leading to such tank or receiver, an outlet device,substantially as described, whereby the height of the water ofcondensation within such tank or receiver may be regulated, and twoindependent liquor-pipes arranged one above the other, all substantiallyas described,

whereby liquor of two different degrees of heat may be obtained at thesame time from the same heater, substantially as and for the purposesset forth.

6. In an apparatus substantially as described, the combination of theheating-tank provided with the plug-casing, the plug operating in saidcasing, and the outlet-pipe arranged to operate in the heatingtank andconnected at one end with the said plug, whereby its opposite end may,by the turning of said plug, be moved up and down within the tank,substantially as set forth.

7. The improved apparatus, substantially as described, consisting of theboiler, the heating-tank arranged above the Water-level handle or leverconnected therewith, and the outlet-pipe connected at one end with theplug, substantially as set forth.

The above specification of. my invention signed by me in the presence oftwo subscribing witnesses.

JOHN F. BRADFORD.

Witnesses:

P. B. TURPIN, SoLoN C. KEMON.

